Initial stub for a `GraphQL` and `execute`

1 files changed, 51 insertions, 0 deletions

diff --git a/Data/GraphQL/Schema.hs b/Data/GraphQL/Schema.hs
new file mode 100644
index 0000000..cfa1c9c
--- /dev/null
+++ b/Data/GraphQL/Schema.hs
@@ -0,0 +1,51 @@
+module Data.GraphQL.Schema where
+
+import Data.Text (Text)
+import Data.HashMap.Lazy (HashMap)
+
+data Schema = Schema QueryRoot MutationRoot
+
+type QueryRoot = ObjectOutput
+
+type MutationRoot = ObjectOutput
+
+type ObjectOutput = HashMap Text Output
+
+type ObjectInput =  HashMap Text Input
+
+data Type = TypeScalar Scalar
+          | TypeOutputObject ObjectOutput
+          | TypeInterface Interface
+          | TypeUnion Union
+          | TypeEnum Scalar
+          | TypeInputObject ObjectInput
+          | TypeList List
+          | TypeNonNull NonNull
+
+data Output = OutputScalar Scalar
+            | OutputObject ObjectOutput
+            | OutputInterface Interface
+            | OutputUnion Union
+            | OutputEnum Scalar
+            | OutputList List
+            | OutputNonNull NonNull
+
+data Input = InputScalar Scalar
+           | InputObject ObjectInput
+           | InputEnum Scalar
+           | InputList List
+           | InputNonNull NonNull
+
+data Scalar = ScalarInt Int
+            | ScalarFloat Double
+            | ScalarString Text
+            | ScalarBool Bool
+            | ScalarID Text
+
+newtype Interface = Interface (HashMap Text Output)
+
+newtype Union = Union [ObjectOutput]
+
+type List = [Type]
+
+type NonNull = Type